:root {
    --primary: #0EA5E9;
    --accent: #2563EB;
    --success: #10B981;
    --dark: #0F172A;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    background: var(--dark);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(14, 165, 233, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 20%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    color: white;
}

.container {
    max-width: 500px;
    width: 100%;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.95));
    border-radius: 24px;
    border: 1px solid rgba(14, 165, 233, 0.2);
    box-shadow: 0 0 40px rgba(14, 165, 233, 0.1);
}

.premium-tag {
    background: linear-gradient(45deg, var(--primary), var(--accent));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    display: inline-block;
    margin-bottom: 2rem;
    font-weight: 600;
    animation: float 3s ease-in-out infinite;
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.3);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #0EA5E9, #2563EB);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
    font-weight: 800;
}

.tagline {
    font-size: 1.25rem;
    color: #94A3B8;
    margin-bottom: 2rem;
}

.timer {
    background: rgba(14, 165, 233, 0.1);
    color: #0EA5E9;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    display: inline-block;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.download-speed {
    font-size: 0.9rem;
    color: var(--success);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.speed-bar {
    width: 100px;
    height: 4px;
    background: rgba(16, 185, 129, 0.2);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.speed-progress {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--success);
    animation: progress 2s infinite;
    width: 30%;
}

@keyframes progress {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(300%); }
}

.cta-button {
    display: inline-block;
    width: 100%;
    padding: 1.25rem;
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    color: white;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cta-button::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        rgba(255, 255, 255, 0.2),
        rgba(255, 255, 255, 0.1),
        rgba(255, 255, 255, 0)
    );
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: rotate(45deg) translateY(-100%); }
    100% { transform: rotate(45deg) translateY(100%); }
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(14, 165, 233, 0.4);
}

.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.feature {
    background: rgba(14, 165, 233, 0.05);
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

@media (max-width: 480px) {
    .container {
        padding: 1.5rem;
    }
    h1 {
        font-size: 2rem;
    }
    .features {
        grid-template-columns: 1fr;
    }
}